function makeSignedRequest() {
   var params = {};
   params[gadgets.io.RequestParameters.AUTHORIZATION] = gadgets.io.AuthorizationType.SIGNED;
   params[gadgets.io.RequestParameters.CONTENT_TYPE] = gadgets.io.ContentType.JSON;
   var url = "http://172.30.104.31/test/processSign.php";
   gadgets.io.makeRequest(url, response, params);
 };
 
 function response(ret) {
   alert(ret.data);
 
   var html = [ ret.data.validated, "<br />",
     "oauth_consumer_key: ", ret.data.query.oauth_consumer_key, "<br />",
     "oauth_nonce: ", ret.data.query.oauth_nonce, "<br />",
     "oauth_signature: ", ret.data.query.oauth_signature, "<br />",
     "oauth_signature_method: ", ret.data.query.oauth_signature_method, "<br />",
     "oauth_timestamp: ", ret.data.query.oauth_timestamp, "<br />",
     "oauth_token: ", ret.data.query.oauth_token, "<br />",
     "opensocial_appid: ", ret.data.query.opensocial_appid, "<br />",
     "opensocial_ownerid: ", ret.data.query.opensocial_ownerid, "<br />",
     "xoauth_signature_publickey: ", ret.data.query.xoauth_signature_publickey ].join("");
 
   alert(html);
 
 };
 
